I'll give it a try. Thanks all! Best wishes~
On 2013/12/15 1:16, Stéphane Graber wrote: > Hi, > > There are also two scripts I'm using for the Android port that can be useful: > http://bazaar.launchpad.net/~ubuntu-lxc/lxc/android-build-scripts/files > > On Android (ramfs), I'd start a container by using that run-lxc wrapper > which will then source prepare.sh which will in turn prepare a "fake" > environment that we can pivot_root to. > > The trick is basically to create a new directory on a non-ramfs mount > point, then bind-mount all the bits you need, then chroot to that > directory and run LXC from it. > > On Sat, Dec 14, 2013 at 01:08:09PM +0000, Cal Leeming [Simplicity Media Ltd] > wrote: >> Seems there's a few discussions about ramfs and pivot [1], and apparently >> it's unsupported [2]. >> >> As a workaround you could try to place overlayfs on top of your ramfs [3], >> you'd then place both your lower and upper dir on ramfs - YMMV. >> >> Others may chime in with a different workaround, as I'm not sure if this >> would be the best way. >> >> Hope this helps >> >> Cal >> >> [1] https://www.google.co.uk/search?q=pivot_root+tmpfs >> [2] http://www.slax.org/blog/18438-initramfs-pivot-root-solution.html >> [3] http://askubuntu.com/questions/109413/how-do-i-use-overlayfs >> >> >> >> >> >> On Sat, Dec 14, 2013 at 7:18 AM, Qiang Huang <[email protected]>wrote: >> >>> Hi guys, >>> >>> I was trying to run a container from ramfs, to root filesystem is >>> rootfs(ramfs), the template is put onto a mounted disk whose fs is >>> ext3, and I got this error(I'll skip my config and version and os >>> and so on, I think they are not keys): >>> ... >>> lxc-start 1386999058.944 DEBUG lxc_conf - mountpoint for old rootfs is >>> '/usr/local/lib/lxc/rootfs/lxc_putold' >>> lxc-start 1386999058.944 ERROR lxc_conf - Invalid argument - pivot_root >>> syscall failed >>> lxc-start 1386999058.944 ERROR lxc_conf - failed to setup pivot root >>> lxc-start 1386999058.944 ERROR lxc_conf - failed to set rootfs for >>> 'hq91' >>> lxc-start 1386999058.944 ERROR lxc_start - failed to setup the container >>> lxc-start 1386999058.944 ERROR lxc_sync - invalid sequence number 1. >>> expected 2 >>> lxc-start 1386999058.952 ERROR lxc_start - failed to spawn 'hq91' >>> >>> I dug and figured out that pivot_root has some limitations with ramfs, >>> So is it possible to run a container from ramfs? And how can we do that? >>> >>> Any comments are appreciated. >>> >>> >>> _______________________________________________ lxc-users mailing list [email protected] http://lists.linuxcontainers.org/listinfo/lxc-users
